Skills

RZDatacenter Infrastructure

  • Planning, building, and maintaining datacenter infrastructures for medium-sized businesses
  • Selection and implementation of suitable server, network, storage, and backup solutions
  • Ensuring high availability, scalability, and operational reliability

ITIT Integration of Subsidiaries

  • Planning and implementation of full network integration for subsidiaries
  • Project leadership: from concept to handover to central IT
  • Migration of existing systems, site interconnects, alignment of Active Directory structures

OSOperating Systems & Servers

  • Windows Server (2003-2025, incl. Core), Linux (Debian, Ubuntu, CentOS)
  • Active Directory, Group Policy, DNS, DHCP
  • Microsoft certificate authorities (Active Directory Certificate Services / PKI)
  • Microsoft Terminal Server / RDS
  • Administration of NTFS permissions

EMEmail & Messaging

  • Microsoft Exchange, online and on-premises
  • Mail security gateways: FortiMail, Proxmox Mail Gateway
  • Postfix, Dovecot
  • Mailcow as a complete groupware mail system

VMVirtualization & Backup

  • VMware, Citrix, Hyper-V, Proxmox
  • Backup: Veeam, Commvault
  • Automated backup strategies, offsite backup, recovery testing
  • Operating highly available virtualized environments

FWNetworking & Security

  • LAN/WAN, routing/switching (Cisco, HPE, Juniper, Fortinet)
  • Firewalls: Palo Alto, Juniper, Cisco, Sophos, Fortinet
  • Network segmentation, site interconnects (MPLS, SD-WAN, VPN)
  • VPN technologies: IPsec, SSL, site-to-site, remote access
  • Security concepts based on tiering models (DMZ, internal zones)

AZCloud & Azure

  • Microsoft Azure: Azure AD, virtual networks, VPN gateway, Azure VMs
  • Hybrid cloud architectures

VOTelephony & VoIP

  • VoIP systems, PBXs
  • 3CX (cloud & on-prem), Microsoft Teams integration, SIP trunk management

MOMonitoring & Infrastructure Management

  • Zabbix: building and operating monitoring infrastructures
  • Performance monitoring, alerting, and reporting

DBWeb & Databases

  • Web servers: IIS, Apache, Nginx
  • Basic knowledge of SQL and NoSQL databases
  • Monitoring & performance analysis

Get in touch

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